power/reset: brcmstb: Make the driver buildable on MIPS

Now that the driver doesn't use any ARM-specific headers, it is safe
to build on MIPS or with COMPILE_TEST.
Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Signed-off-by: NSebastian Reichel <sre@kernel.org>

drivers/power/reset/Kconfig

@@ -39,14 +39,13 @@ config POWER_RESET_AXXIA
 	  Say Y if you have an Axxia family SoC.
 
 config POWER_RESET_BRCMSTB
-	bool "Broadcom STB reset driver" if COMPILE_TEST
-	depends on ARM
+	bool "Broadcom STB reset driver"
+	depends on ARM || MIPS || COMPILE_TEST
 	default ARCH_BRCMSTB
 	help
-	  This driver provides restart support for ARM-based Broadcom STB
-	  boards.
+	  This driver provides restart support for Broadcom STB boards.
 
-	  Say Y here if you have an ARM-based Broadcom STB board and you wish
+	  Say Y here if you have a Broadcom STB board and you wish
 	  to have restart support.
 
 config POWER_RESET_GPIO